<p>Drought stress is a major abiotic factor limiting potato growth and productivity. This study evaluated the roles of jasmonic acid (JA) and triazole (TAZ) treatments in mitigating drought-induced damage in the potato cultivar Agria under greenhouse and field conditions. The greenhouse experiment was conducted as a factorial experiment based on a completely randomized design (CRD) with three factors of irrigation regimes (100%, 75%, and 50% of field capacity); JA levels (0 and 1 mg L⁻¹); and TAZ treatments (control, penconazole, hexaconazole, propiconazole, and paclobutrazol), with three replications, while the field experiment followed a split-factorial arrangement within a randomized complete block design (RCBD). Drought stress significantly reduced plant growth, chlorophyll content, relative water content, carbohydrate accumulation, and tuber yield in both environments. Application of JA improved drought tolerance by enhancing relative water content, membrane stability, and antioxidant enzyme activity, whereas triazole treatments increased water-use efficiency, improved canopy architecture, and enhanced nutrient uptake. Significant interaction effects among irrigation, JA, and TAZ indicated their combined role in regulating starch and sucrose accumulation as well as tuber development. Overall, the combined application of JA and TAZ effectively mitigated drought-induced damage and significantly improved physiological performance and tuber yield under water-deficit conditions, highlighting their synergistic potential as a practical strategy for sustaining potato productivity under limited water availability.</p>